Liza Minnelli to guest star on NBC's 'Smash'

Liza Minnelli is set to make a guest appearance as herself on an upcoming episode of NBC's Smash.

The 66-year-old will appear on the musical drama and sing an original song with star Christian Borle, NBC chairman Robert Greenblatt announced today.

The song will be written by the show's composing duo Marc Shaiman and Scott Wittman.

Greenblatt said: "Liza Minnelli is the essence of a multi-talented, singular show business sensation, particularly for her extraordinary contributions to Broadway. So what could be more fitting than to have her legendary talent on a show that celebrates a world Liza has dazzled for decades?

"I had the pleasure of working with Liza when we restored her landmark television special Liza With a Z at Showtime, and to see her artistry up close and personal is a thing to behold."

Smash is a musical drama that celebrates the Broadway theatre, following a selection of misfits who are all united by their desire to become a Broadway star.